CVE-2026-50516
Microsoft Azure Kubernetes Service Elevation of Privilege Vulnerability
Description
Missing authentication for critical function in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over a network.
In plain language
AI Act nowCVE-2026-50516 is a critical privilege-escalation flaw in Microsoft Azure Kubernetes Service that lets an outside attacker gain higher access over the network without needing a login; if you run AKS, you should treat this as urgent and ensure Microsoft’s fix has been applied.
CVE-2026-50516 is a privilege escalation issue (CWE-306) in Microsoft Azure Kubernetes Service where a missing security check/authorization for a network-accessible function allows an unauthenticated external attacker to gain higher-level access rights (no authentication or user interaction required).
What to do now
- Check whether you are running Microsoft Azure Kubernetes Service (AKS) clusters (including any production clusters).
- Open Microsoft’s update guidance for CVE-2026-50516 and identify the fixed AKS/control-plane runtime state for your cluster.
- Apply the Microsoft-provided remediation (cluster/control-plane upgrade or the required AKS update path from the Microsoft update guide) as soon as possible.
- After applying, verify your AKS cluster is on the patched/updated state using the verification steps in the same Microsoft update guidance and confirm no failed upgrade steps remain.
CVSS Vector Breakdown
AV:NAttack VectorAC:LAttack ComplexityPR:NPrivileges RequiredUI:NUser InteractionS:UScopeC:HConfidentialityI:HIntegrityA:LAvailabilityWeaknesses
Affected Products
Exploitability
Attack Graph
Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.
MITRE ATT&CK
2 techniquesReferences
- Microsoft Patch Tuesday for August 2026 — Snort rules and prominent vulnerabilitiesen·Cisco Talos· Exploited Windows patch-tuesday
- Microsoft Patch Tuesday, August 2026 Security Update Reviewen-us·Qualys Security Blog· Exploited Windows patch-tuesday
- Microsoft August 2026 Patch Tuesday fixes 400 flaws, 3 zero-daysen-us·BleepingComputer· Exploited Windows Lazarus group
- Microsoft Patch Tuesday August 2026 - SANS ISCen·SANS Internet Storm Center· Exploited Windows zero-day
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